/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ES2PANDA_COMPILER_BASE_OPTIONAL_CHAIN_H
#define ES2PANDA_COMPILER_BASE_OPTIONAL_CHAIN_H

#include <ir/irnode.h>
#include <ir/expression.h>

namespace panda::es2panda::compiler {
class PandaGen;
class Label;

class OptionalChain {
public:
    explicit OptionalChain(PandaGen *pg, const ir::AstNode *node);
    ~OptionalChain();

    void CheckNullish(bool optional, compiler::VReg obj);

    NO_COPY_SEMANTIC(OptionalChain);
    NO_MOVE_SEMANTIC(OptionalChain);

private:
    void InitThisVRegForCallExpression();

    PandaGen *pg_ {};
    const ir::AstNode *node_ {};
    Label *label_ {};
    OptionalChain *prev_ {};
};
} // namespace panda::es2panda::compiler

#endif
